97
Materials Examined 8 exs 21.vi.2008. Ghe
Koili, Chandbali, Bhadrak District, Orissa,
S. Dash & Party.
Diagnostic Characters The species can be
identifi ed by a triangular tooth present in the
femur beyond the middle of its length. Metasternal
process is subtriangular.
Distribution India: Andhra Pradesh, Bihar,
Delhi, Jammu and Kashmir, Karnataka, Kerala,
Madhya
Pradesh,
Maharashtra,
Orissa,
Pondicherry, Rajasthan, Tamil Nadu, Uttar
Pradesh, West Bengal.
Elsewhere Australia, Nepal, Sri Lanka.
2. Ranatra fi liformis Fabricius, 1790
1790 Ranatra fi liformis Fabricius , Skirf Nat.
Selesk 227–228
1989 Ranatra elongata Fabricius : Thirumalai
Rec. Zool. Surv. of India Occ. Pap. No . 118: 31
Materials Examined 10 exs, 23.vi. 08. Similia
Bridge (Hanuman Nagar) and Haripur, Chandbali,
Bhadrak District, Orissa, S. Dash & Party; 3 exs
21.vi.2008. Ghe Koili, Chandbali, Bhadrak
District, Orissa, S. Dash & Party.
Diagnostic Characters R. fi liformis mostly
occurs in the shallower parts of the waterbodies,
where it clings to the submerged vegetation. It is
smaller in size than R. elongata. The respiratory
syphon is shorter than the body.
Distribution India: Andhra Pradesh, Arunachal
Pradesh, Bihar, Delhi, Karnataka, Kerala,
Madhya
Pradesh,
Maharashtra,
Orissa,
Pondicherry, Manipur, Meghalaya, Rajasthan,
Tamil Nadu, Uttar Pradesh, West Bengal.
Elsewhere China, Nepal, Pakistan, Philippines,
Sri Lanka.
Subfamily : Nepinae Latereille, 1802
Tribe: Nepini Latereille, 1802
Genus: Laccotrephus Stal, 1866
3. Laccotrephus griseus Guerin-Meneville,
1844
1844 . Nepa griseus Guerin, Icongr. Regne.
Anim. Ins., 352
1910b. Laccotrephus griseus (Guerin): Distant,
Fauna British India, 5 :314
1994 Laccotrephus griseus (Guerin : Thirumalai
Rec. Zool. Surv. of India, Occ. Pap. No. 165:
21
Materials Examined 15 exs. 22.vi. 2008, Similia
Bridge (Hanuman Nagar), Chandbali District:
Bhadrak, Orissa, S. Dash & Party
Diagnostic Characters This species is found
near the lower current of water fl ow where it is
equal to stagnation under the weeds. The
abdominal appendages are shorter than the body.
Slightly hooked and symmetrical parameters. It
is very common in southern India waterbodies.
Distribution India: Andhra Pradesh, Arunachal
Pradesh, Bihar, Delhi, Karnataka, Kerala,
Madhya
Pradesh,
Maharashtra,
Orissa,
Pondicherry, Manipur, Meghalaya, Nagaland,
Orissa, Rajasthan, Tamil Nadu, Uttar Pradesh,
West Bengal.
Elsewhere Malaysia, Myanmar, Seychelles, Sri
Lanka, Thailand.
4. Laccotrephus ruber Linnaeus, 1764
1764. Nepa ruber , Linnaeus . , Mus. Lud. Ulr .,
165
1906. Laccotrephus ruber (Linnaeus): Distant,
Fauna British India,3 :18.
1994. Laccotrephus ruber (Linnaeus):
Thirumalai Rec. Zool. Surv. of India, Occ.
Pap. No. 165: 22
Material Examined 5 exs, 23.vi. 2008 Similia
Bridge (Hanuman Nagar) and Haripur, Chandbali,
District Bhadrak, Orissa. S. Dash and Party.
Diagnostic Characters It is a species with a
medium length of about 3–5 cm with dark brown
to black. Long, pointed shape with a long-tailed
pair front leg near the mouth used for capturing
prey. Abdominal appendices slightly longer than
the body.
7 Aquatic Insect Diversity
Materials Examined 8 exs 21.vi.2008. Ghe
Koili, Chandbali, Bhadrak District, Orissa,
S. Dash & Party.
Diagnostic Characters The species can be
identifi ed by a triangular tooth present in the
femur beyond the middle of its length. Metasternal
process is subtriangular.
Distribution India: Andhra Pradesh, Bihar,
Delhi, Jammu and Kashmir, Karnataka, Kerala,
Madhya
Pradesh,
Maharashtra,
Orissa,
Pondicherry, Rajasthan, Tamil Nadu, Uttar
Pradesh, West Bengal.
Elsewhere Australia, Nepal, Sri Lanka.
2. Ranatra fi liformis Fabricius, 1790
1790 Ranatra fi liformis Fabricius , Skirf Nat.
Selesk 227–228
1989 Ranatra elongata Fabricius : Thirumalai
Rec. Zool. Surv. of India Occ. Pap. No . 118: 31
Materials Examined 10 exs, 23.vi. 08. Similia
Bridge (Hanuman Nagar) and Haripur, Chandbali,
Bhadrak District, Orissa, S. Dash & Party; 3 exs
21.vi.2008. Ghe Koili, Chandbali, Bhadrak
District, Orissa, S. Dash & Party.
Diagnostic Characters R. fi liformis mostly
occurs in the shallower parts of the waterbodies,
where it clings to the submerged vegetation. It is
smaller in size than R. elongata. The respiratory
syphon is shorter than the body.
Distribution India: Andhra Pradesh, Arunachal
Pradesh, Bihar, Delhi, Karnataka, Kerala,
Madhya
Pradesh,
Maharashtra,
Orissa,
Pondicherry, Manipur, Meghalaya, Rajasthan,
Tamil Nadu, Uttar Pradesh, West Bengal.
Elsewhere China, Nepal, Pakistan, Philippines,
Sri Lanka.
Subfamily : Nepinae Latereille, 1802
Tribe: Nepini Latereille, 1802
Genus: Laccotrephus Stal, 1866
3. Laccotrephus griseus Guerin-Meneville,
1844
1844 . Nepa griseus Guerin, Icongr. Regne.
Anim. Ins., 352
1910b. Laccotrephus griseus (Guerin): Distant,
Fauna British India, 5 :314
1994 Laccotrephus griseus (Guerin : Thirumalai
Rec. Zool. Surv. of India, Occ. Pap. No. 165:
21
Materials Examined 15 exs. 22.vi. 2008, Similia
Bridge (Hanuman Nagar), Chandbali District:
Bhadrak, Orissa, S. Dash & Party
Diagnostic Characters This species is found
near the lower current of water fl ow where it is
equal to stagnation under the weeds. The
abdominal appendages are shorter than the body.
Slightly hooked and symmetrical parameters. It
is very common in southern India waterbodies.
Distribution India: Andhra Pradesh, Arunachal
Pradesh, Bihar, Delhi, Karnataka, Kerala,
Madhya
Pradesh,
Maharashtra,
Orissa,
Pondicherry, Manipur, Meghalaya, Nagaland,
Orissa, Rajasthan, Tamil Nadu, Uttar Pradesh,
West Bengal.
Elsewhere Malaysia, Myanmar, Seychelles, Sri
Lanka, Thailand.
4. Laccotrephus ruber Linnaeus, 1764
1764. Nepa ruber , Linnaeus . , Mus. Lud. Ulr .,
165
1906. Laccotrephus ruber (Linnaeus): Distant,
Fauna British India,3 :18.
1994. Laccotrephus ruber (Linnaeus):
Thirumalai Rec. Zool. Surv. of India, Occ.
Pap. No. 165: 22
Material Examined 5 exs, 23.vi. 2008 Similia
Bridge (Hanuman Nagar) and Haripur, Chandbali,
District Bhadrak, Orissa. S. Dash and Party.
Diagnostic Characters It is a species with a
medium length of about 3–5 cm with dark brown
to black. Long, pointed shape with a long-tailed
pair front leg near the mouth used for capturing
prey. Abdominal appendices slightly longer than
the body.
7 Aquatic Insect Diversity